DSOs; most notably, the scoreboard was reinitialized during graceful
restart, such that processes of the previous generation were not
observable.

Other noticeable ones:
* the generation number did not increment properly
* worker's check-config hook didn't detect startup properly,
  so messages about inconsistent directives could have been sent
  to the wrong place

max_daemons_limit wasn't tracked across restart, but as the scoreboard
was always cleared this was a non-issue.

Reinitialization of idle_spawn_rate, hold_off_on_exponential_spawning,
and maxclients-message-reported may or may not have been features,
but the big picture is that the behaviour shouldn't have differed.

These changes should have been part of r758185.


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mod_request for any module that may want to parse form data...

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invalidate existing cache entities as per RFC2616 13.10. PR 15868.


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if they were not active during server startup but got enabled later during a
graceful restart (in which case they need to do all work during a single
config run).


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if the current configuration run is the initial one at server startup,
and if the server is started for testing/config dumping only.


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the Expires is in the past, not as if the Expires is missing. PR 16521.


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Cache-Control header. PR 50199.


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    If an unknown Content-* header is received for a PUT request, we must not
    ignore it but reply with 501 per RFC 2616 9.6.
    
    PR: 42978

Vetoed by Roy T. Fielding:
http://mail-archives.apache.org/mod_mbox/httpd-dev/201102.mbox/%3C9A5A8B62-ED16-4BD3-97DA-8475026BB81D@gbiv.com%3E


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take precedence if present. PR 35247.


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  startup failure in cases where multiple vhosts share the same
  "vhost-id" and private key file.  The cached-key case would
  previously cause an abrupt return from the function, which could
  prevent processing of configured keypairs for other vhosts.  There
  is no apparent reason to check for a "cache hit" against cached keys
  using *any* algorithm types; instead only check against a key with
  the matching type.

Submitted by: Masahiro Matsuya <matsuya redhat.com>, jorton


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PR: 50735
Submitted by: Mark Montague <mark catseye.org>
Reviewed by: rpluem


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  Update mpm_state in the signal handlers such that it is correct in
  children during a graceful stop/restart too.

PR: 41743
Submitted by: Andrew Punch <andrew.punch 247realmedia.com>


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breaks MacOS X and wherever this code will go, server/main.c does not seem to be the right place.
See
http://mail-archives.apache.org/mod_mbox/httpd-dev/201102.mbox/%3C01930193-8A3B-4635-9EB0-5EE31349E49C@jaguNET.com%3E


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PR: 50619
Submitted by: Matt Miller <m miller f5 com>, Stefan Fritsch


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PR 50434


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ap_resolve_env() to look for variables defined in this way. This allows to use
the variables in the config using the ${VAR} syntax known from envvar
interpolation


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headers configurable: ProxyAddHeaders, defaulting to 'On'.
http://www.mail-archive.com/dev@httpd.apache.org/msg49971.html


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mod_slotmem_shm.

Consumers still need to choose the slot sizes
appropriate for consistent alignment.
mod_slotmem_shm only cares about the alignment
for the first slot.

We use the APR default alignment.


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  config hooks for OCSP response time skew, maximum age, timeout.

* modules/ssl/ssl_engine_ocsp.c (verify_ocsp_status): Respect
  config settings for above.

* docs/: Update accordingly.

Submitted by: Kaspar Brand <httpd-dev.2011 velox.ch>


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  "coalesce" filter which buffers the plaintext, and remove buffering
  of the SSL records -- i.e. buffer before the SSL output filter,
  rather than after it.  This aims to reduce the network overhead
  imposed by the output of many small brigades (such as produced by
  chunked HTTP response), which can now be transformed into a few
  large TLS records rather than many small ones.

  (ssl_filter_ctx_t): Remove "nobuffer" field.
  (bio_filter_out_ctx_t): Remove length, buffer, blen fields.
  (bio_filter_out_pass): Split from bio_filter_out_flush.
  (bio_filter_out_write): Remove handling of buffer.
  (bio_filter_out_ctrl): Adjust to reflect lack of buffer.
  (ssl_io_filter_coalesce): Add new filter...
  (ssl_io_filter_init): ...add it to the filter chain...
  (ssl_io_filter_register): ...and register it.


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This makes <If> apply to all requests, not only to file base requests and
it allows to use <If> inside <Directory>, <Location>, and <Files> sections.

The merging of <If> sections always happens after the merging of <Location>
sections, even if the <If> section is embedded inside a <Directory> or
<Files> section.


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PR: 47022
Submitted by: Jordi Prats <jordi prats gmail com>, Stefan Fritsch


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AP_MPMQ_MAX_THREADS: Single threaded means one thread per child, not zero
AP_MPMQ_MAX_DAEMONS: Max # daemons by config is determined by MaxClients, not
                     ServerLimit


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        section->op == AUTHZ_LOGIC_AND
        auth_result == AUTHZ_DENIED_NO_USER
        child_result == AUTHZ_GRANTED
to return AUTHZ_GRANTED instead of AUTHZ_DENIED_NO_USER.

While there, refactor the if blocks to make them a bit more readable.


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of "provider" and likely confusion with AuthnCacheSOCache.


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of the backend connection, instead of misusing the pool of the frontend
request. Fixes a thread safety issue where buckets set aside in the
backend connection leak into other threads, and then disappear when
the frontend request is cleaned up, in turn causing corrupted buckets
to make other threads spin.


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to be RFC 2253 compatible, convert non-ASCII characters to UTF8, and 
escape other special characters with backslashes. The old format can
still be used with the LegacyDNStringFormat argument to SSLOptions.


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PR: 49512
Submitted by: Mark Drayton <mark markdrayton info>, Stefan Fritsch


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    Change the default of the Header directive to apply to responses of all types
    instead of just 2xx successful responses.

This turned out to be do more harm than good for anything other 
than "set", since "always" doesn't ever see/operate on existing 
r->headers_out headers -- just err_headers_out. 

I think onsuccess needs to remain the default and this needs to move into a 
doc revamp.



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mod_headers defaults.

Should I flag this CHANGES entry in any way?


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This patch disallows the mixing of relative (+/-) and absolute Options where insensible.


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whose names contain invalid characters. Describe in the docs how to restore the
old behaviour.

Submitted by: Malte S. Stretz <mss apache org>


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